`Donna: Can you tell me where the library is?
Harry: Of course, it’s behind the teaching building.
Donna: Thanks.
Harry: ________.
`Donna: Can you tell me where the library is?
Harry: Of course, it’s behind the teaching building.
Donna: Thanks.
Harry: ________.
A、 Don’t be so sure.
B、 I’m happy to have done it.
C、 You are welcome.
D、 I’m glad you like it.
【正确答案】:C
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